Pre-Connectorized FTTH Network Overview
Hub Box Interface: Terminates the feeder cable and provides a pre-connectorized output for 5.0mm round cables; uses 2*5mm flat drop cables.
Scalable Cascade: The 1x8 Hub Box enables easy deployment of a network cascading up to eight 1:8 Sub Boxes.
Cost-Effective Deployment: Plug-and-play design with only one splice point slashes both OPEX and CAPEX.
Pre-connectorized FTTH ODN Solution
Spring's pre-terminated fiber cables and unequal ratio splitters simplify deployment and enhance network performance, supporting splitter ratios of 1:64 or 1:128.
Optical Fiber Configuration
The network employs a single-fiber cascading topology. Each asymmetric optical chain consists of three FAT boxes (with a 1:9 splitting ratio) and one END box (with a 1:8 splitting ratio), supporting a total of 32 subscribers.
Waterproof Adapter Compatibility
This solution is compatible with waterproof adapters from multiple vendors, such as Huawei, Furukawa, FiberHome, and traditional types.
Only the Huawei compatible type is illustrated in this Fast Connector Solution diagram.
Pre-connectorized Box and Fiber Optic Cable Introducing
Hub Box
|
Dimension(HxWxD) |
310mmx220mmx110mm |
|
Ingress Protection grade |
IP68 |
|
Pre-connected Capacity |
8F[with 1x8] |
|
Splicing Capacity |
Max.96F |
|
Application |
Wall/Pole/Aerial |
Sub Box
|
Dimension(HxWxD) |
210mm×210mm×95mm |
|
Ingress Protection grade |
IP68 |
|
Pre-connected Capacity |
1x8 |
|
Splicing Capacity |
- |
|
Application |
Wall/Pole/Aerial |
Waterproof Fiber Optic Cable
|
Cable type |
Customizable(φ5.0mm/2*5mm) |
|
Insertion loss(unit: dB) |
Max. ≤ 0.3 |
|
Cable length |
Customizable |
|
Cable tension |
200N |
Hub Box – Primary Splitting Point
The Hub Box is typically deployed at the aggregation node in a fiber optic network. It serves as the primary signal distribution point, splitting optical signals from the backbone cable into multiple downstream paths for further distribution.
|
Model |
SP-ODB-8F-HW |
|
Termination capacity |
Max 8 |
|
Max splicing capacity |
96F |
|
Splicing capacity per tray |
24F |
|
Optical cable inlet and outlet |
1 oval and 2 branch ports for traditional cable 8 output ports for hardend adaptor |
|
Optical device |
1*8 splitter |
|
Installation mode |
Pole, wall or aerial cable mounting |
|
Application scenario |
Overground, underground |
|
Dimensions (H x W x D mm) |
310 x 220 x 110 |
|
Net weight (kg) |
2.5 |
|
Shell materials |
PP+GF |
|
Color |
Black |
|
Protection rating |
IP68 |
|
Flame-retardant rating |
UL94-HB |
|
RoHS |
Compliant |
|
Sealing mode |
Mechanical |
|
Adapter type |
Huawei hardened adapter |
Sub Box – Secondary Distribution Point
Acting as an intermediate node between the Hub Box and the End Box, the Sub Box further divides the optical signals from the aggregation layer and directs them toward specific user groups or localized areas.
|
Model |
SP-OTB-08A-B |
|
Termination capacity |
10 |
|
splicing capacity |
- |
|
Splicing capacity per tray |
- |
|
Optical cable inlet and outlet |
1 intput port (red) 8 output ports (black) |
|
Optical device |
1:8 splitter |
|
Insertion loss(dB) |
10.8 |
|
Installation mode |
Pole, wall or aerial cable mounting |
|
Application scenario |
Overground, underground |
|
Dimensions (H x W x D mm) |
213 x 188 x 74 |
|
Net weight (kg) |
0.5~0.6 |
|
Shell materials |
PP+GF |
|
Color |
Black |
|
Protection rating |
IP68 |
|
Flame-retardant rating |
UL94-HB |
|
RoHS |
Compliant |
|
Sealing mode |
Mechanical |
|
Adapter type |
Huawei hardened adapter |
Pre-connectorized Distribution Cable – Inter-node Connectivity
This refers to a distribution cable that is pre-terminated with fiber optic connectors at both ends. Designed for rapid deployment, it enables fast and reliable connections between distribution nodes, such as from Hub Box to Sub Box, or between multiple Sub Boxes.
|
Model |
SP-AA1A0-XXXXMBE |
|
Fiber count |
1 |
|
Fiber type |
G.657 A2 |
|
Cable diameter(mm) |
φ5mm |
|
Connector type |
Hardened |
|
Insertion loss(unit: dB) |
Max. ≤ 0.3 |
|
Cable length |
Customizable |
|
Tensile of connector |
200N |
|
Tensile of cable |
600N |
Pre-connectorized Drop Cable
Featuring factory-preterminated connectors on one or both ends, this drop cable is utilized for the final connection to the customer. It enables a fast and reliable plug-and-play installation from a branch point (e.g., Sub Box) to the user's home, eliminating field termination and ensuring consistent performance.
|
Model |
SP-AA1A0-XXXXMBE |
|
Fiber count |
1 |
|
Fiber type |
G.657 A2 |
|
Cable diameter(mm) |
2*5 mm |
|
Connector type |
Hardened to SC/APC |
|
Insertion loss(unit: dB) |
Max. ≤ 0.3 |
|
Cable length |
Customizable |
|
Tensile of connector |
200N |
|
Tensile of cable |
400N |
Initially popular in South America, this product is now widely used worldwide. Rigorously tested and competitively priced, it helps our partners secure projects and succeed in the market.
Professional PDF available upon request.
Optical Power Budget Calculation (1:64)
|
Item |
Type |
Average Loss(dB) |
|
G.652D |
Rx: 1310nm(1km) |
≤0.35 |
|
Tx: 1490nm(1km) |
≤0.25 |
|
|
G.657A2 |
Rx: 1310nm(1km) |
≤0.36 |
|
Tx: 1490nm(1km) |
≤0.25 |
|
|
Connection point |
Fusion splicing point |
≤0.05 |
|
SC Adaptor connector |
≤0.3 |
|
|
Fast field connector |
≤0.3 |
|
|
Optical Splitters |
1:2 splitter |
≤3.6 |
|
Uneven 1:9 signal |
≤2.1 |
|
|
Uneven 1:9 tap |
≤16.3 |
|
|
|
1:8 splitter |
≤10.5 |
|
Redundancy |
1-3dB |
2dB |
|
Optical Module |
Standard Value |
Maximum link power |
|
Class B+ |
13~28dBm |
-21.8dBm |
|
Class C+ |
17~32dBm |
|
|
Max Coverage Distance |
||
|
Class B+ |
(28-22.1-2)/0.35=11.1Km | |
|
Class C+ |
(32-22.1-2)/0.35=22.5kM | |
Redundancy loss=2dB
|
Description |
OLT Power (dBm) |
ODF |
SSC |
Hub Box |
FAT Box 1 |
FAT Box 2 | FAT Box 3 | End Box |
ONU |
|
|
+4.5 |
|
- |
- |
(1:9) |
(1:9) | (1:9) |
(1:8) |
- |
||
|
Optical cable(dB/km) |
0.35 |
|
|
|
|
|
|
|||
|
Fusion Splice Poin |
0.05 |
1 |
1 |
1 |
|
|
|
|||
|
SC Hardened adapter |
0.3 |
|
|
1 |
2 |
2 | 1 |
1 |
1 |
|
|
1:2 Splitter |
3.6 |
|
|
1 |
|
|
|
|||
| 1:9 Splitter | 70% | 2.1 | 1 | 1 | 1 | |||||
| 30% | 16.3 | 1 | 1 | 1 | ||||||
|
1:8 Splitter |
10.5 |
|
|
|
|
1 |
|
|||
|
Total |
Cascade |
|
0.05 | 0.05 | 3.95 | 2.7 | 2.7 | 2.7 | 10.8 | 0.3 |
| equal | 16.9 | 16.9 | 16.9 | |||||||
|
Link attenuation |
-21.2 |
-23.9 | -26.6 |
-23.2 |
|
|||||
|
Theroretical Optical Power(with OLT Power) |
-16.7 |
-19.4 | -22.1 |
-18.7 |
|
|||||
Optical Power Budget Calculation (1:128)
|
Item |
Type |
Average Loss(dB) |
|
G.652D |
Rx: 1310nm(1km) |
≤0.35 |
|
Tx: 1490nm(1km) |
≤0.25 |
|
|
G.657A2 |
Rx: 1310nm(1km) |
≤0.36 |
|
Tx: 1490nm(1km) |
≤0.25 |
|
|
Connection point |
Fusion splicing point |
≤0.05 |
|
SC Adaptor connector |
≤0.3 |
|
|
Fast field connector |
≤0.3 |
|
|
Optical Splitters |
1:4 splitter |
≤6.6 |
|
Uneven 1:9 signal |
≤2.1 |
|
|
Uneven 1:9 tap |
≤16.3 |
|
|
|
1:8 splitter |
≤10.5 |
|
Redundancy |
1-3dB |
2dB |
|
Optical Module |
Standard Value |
Maximum link power |
|
Class B+ |
13~28dBm |
-25.1dBm |
|
Class C+ |
17~32dBm |
|
|
Max Coverage Distance |
||
|
Class B+ |
(28-25.1-2)/0.35=2.6Km | |
|
Class C+ |
(32-25.1-2)/0.35=14kM | |
Redundancy loss=2dB
|
Description |
OLT Power (dBm) |
ODF |
SSC |
Hub Box |
FAT Box 1 |
FAT Box 2 | FAT Box 3 | End Box |
ONU |
|
|
+4.5 |
- |
- |
(1:9) |
(1:9) | (1:9) |
(1:8) |
- |
|||
|
Optical cable(dB/km) |
0.35 |
|||||||||
|
Fusion Splice Poin |
0.05 |
1 |
1 |
1 |
||||||
|
SC Hardened adapter |
0.3 |
1 |
2 |
2 | 1 |
1 |
1 |
|||
|
1:4 Splitter |
6.6 |
1 |
||||||||
| 1:9 Splitter | 70% | 2.1 | 1 | 1 | 1 | |||||
| 30% | 16.3 | 1 | 1 | 1 | ||||||
|
1:8 Splitter |
10.5 |
1 | ||||||||
|
Total |
Cascade | 0.05 | 0.05 | 6.9 | 2.7 | 2.7 | 2.7 | 10.8 | 0.3 | |
| equal | 16.9 | 16.9 | 16.9 | |||||||
|
Link attenuation |
-24.2 |
-26.9 | -29.6 |
-26.2 |
||||||
|
Theroretical Optical Power(with OLT Power) |
-19.7 |
-22.4 | -25.1 |
-21.7 |
||||||
Basic Standard
ITU-T G.657 Fibers:
Uncabled fibre macrobending loss
|
|
ITU-T G.657.A1 |
ITU-T G.657.A2 |
||||
|
Radius (mm) |
15 |
10 |
15 |
10 |
7.5 |
|
|
Number of turns |
10 |
1 |
10 |
1 |
1 |
|
|
Max. at 1 550 nm (dB) |
0.25 |
0.75 |
0.03 |
0.1 |
0.5 |
|
|
Max. at 1 625 nm (dB) |
1 |
1.5 |
0.1 |
0.2 |
1.0 |
|
|
|
ITU-T G.657.B2 |
ITU-T G.657.B3 |
||||
|
Radius (mm) |
15 |
10 |
7.5 |
10 |
7.5 |
5 |
|
Number of turns |
10 |
1 |
1 |
1 |
1 |
1 |
|
Max. at 1 550 nm (dB) |
0.03 |
0.1 |
0.5 |
0.03 |
0.08 |
0.15 |
|
Max. at 1 625 nm (dB) |
0.1 |
0.2 |
1.0 |
0.1 |
0.25 |
0.4 |
IEC 61753-1, Environmental Categories
IEC 61755-1,Optical performance standard
|
4 attenuation grades (random mated): Grade D: IL ≤ 1,0 dB (for at least 97% of the connections) Grade C: IL ≤ 0,50 dB (97%) Grade B: IL ≤ 0,25 dB (97%) Grade A: Not defined yet, but industry uses ≤ 0,15 dB (97%) |
4 return loss grades (random mated): Grade 4: RL ≥ 26 dB (PC) Grade 3: RL ≥ 35 dB (PC) Grade 2: RL ≥ 45 dB (PC) Grade 1: RL ≥ 60 dB (APC) |
